Brother 09055CDN Service Manual page 418

4. IF YOU REPLACE THE LASER UNIT .....................................................4-10
4.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)................ 4-10
4.2 Performing the Developing Bias Voltage Correction
(Maintenance Mode: Code 83) ................................................................................. 4-10
4.3 Performing the Adjustment of Inter-color Position Alignment
(Maintenance Mode: Code 66) ................................................................................. 4-10
5. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY
PCB ASSY................................................................................................4-11
5.1 Reset of Irregular Power Supply Detection Counter................................................. 4-11
6. IF YOU REPLACE THE DRUM DRIVE MOTOR .....................................4-12
7. IF YOU REPLACE THE DOCUMENT SCANNER UNIT..........................4-15
7.1 Acquisition of White Level Data (Maintenance Mode: Code 55) .............................. 4-15
7.2 Scanning and Printing Check ................................................................................... 4-15
7.3 Placement of Document Scanner Unit in Position for Transportation
(Maintenance Mode: Code 06) ................................................................................. 4-15
8. IF YOU REPLACE THE PANEL UNIT OR RELATED PARTS ................4-15
8.1 Rewriting Panel Firmware Using Computer (Touch Panel Model)............................ 4-15
8.2 Operation Check of LCD (Maintenance Mode: Code 12) ......................................... 4-15
8.3 Operation Check of Control Panel Button (Maintenance Mode: Code 13) ............... 4-15
9. IF YOU REPLACE THE LCD UNIT..........................................................4-16
9.1 Operation Check of LCD (Maintenance Mode: Code 12) ......................................... 4-16
10. IF YOU REPLACE THE TOUCH PANEL ASSY
(TOUCH PANEL MODEL) ......................................................................4-16
10.1 Rewriting Panel Firmware Using Computer ........................................................... 4-16
10.2 Adjustment of Touch Panel
(Maintenance Mode: Code 61) (Touch Panel Model Only)....................................... 4-16
11. IF YOU REPLACE THE SECOND SIDE SCANNING CIS
(DUPLEX SCANNING MODEL).............................................................4-17
11.1 Acquisition of White Level Data (Maintenance Mode: Code 55)............................. 4-17
11.2 Scanning and Printing Check.................................................................................. 4-17
11.3 Placement of Document Scanner Unit in Position for Transportation
(Maintenance Mode: Code 06) ................................................................................. 4-17
12. IF YOU REPLACE THE ADF UNIT........................................................4-17
12.1 Acquisition of White Level Data (Maintenance Mode: Code 55) ............................ 4-17
12.2 Scanning and Printing Check ................................................................................. 4-17
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